Improvement in pumps



tarnish /iutn YHERMAN CAMP, OF ROUSEVILLE, PENNSYLVANIA.

Letters Patent No. 111,3,161 dated. January 31, 1871.

IMPROVEMENT iN PUMPS.

The Schedule referred to in these Letters Patent and making partici thesame.

I, HERMAN CAMP, of Ronseville, in the county of Venango and State oi'Pennsylvania, have inventeda certain Improvement in Pumps foroil-iVells, of which the following is a specication.

In working the pumps of oil-wells the packing of the piston rapidlywears, and is usually required to be replaced once a-week, and sometimesottener. rlhis necessitates the withdrawal oi' the piston or plunger andsucker-rods, involving a stoppage in the,A working of the pump and theloss resulting therefrom,together with the cost of the packing material'and 4the labor ot' replacing the same.

The object of my improvement is 'to obviatc this necessity ofwithdrawing the sucker-rod and stopping the working of the pump in orderto tighten the pack ing; and i rlhe invention consists in thecombination of a. hol low elongated valve-piston and stuiug-box with apump-barrel and well-table, thclatter of which'screws into thepump-barrel in such a manner as to form the gland or follower of thestung-box, the packing of which is adjusted' by turning the well-tablewithout withdrawing or disconnecting any of the parts.

In the accompanying drawing, which represents a longitudinal section ofmy improved pump- Ais the pump-barrel propel', connecting, at its lowerend, with a section, B, of perforated tubing in the ordinary manner.

Gis au enlarged upper portion, screwed or other- 4wisc connected to theupper end of thc tube A, and

forming the stuiing-box.

The upper eud'of this enlarged portion C is provided with an internalthread, into which screws the end ofthe pipe or tubing D. p

The portion-G, for convenience of construction, is made in two parts,screwed together, 'as shown at c.

The section D isreamed out, and is oi' the same diameter as the barrelA.

The main tubing E connects with the upper end of D, as represented.

F is the valve-piston, made hollow, with a ball or other suitable valve,g, arranged in its lower fend in any'usual and suitable manner.

The upper end is provided with suitable openings, f, to permit oftheescape ot' the liquid therefrom;

' This piston is made of uniform size, to closely iit in thepump-barrel, and must be of snicient length below the openings f topermit of Athercquired stroke without disconnecting it iiom the packingH, arranged in the the :box U.

I is theI lower vend of the sucker-rod, coupled to the contracted upperend of the piston. f

The parts .being constructed as hcreinbei'ore described, the barrel A isfastened to the perforated section B,-the box C screwed to the barrel,and the piston arrangedtherein.

The packing H is then arranged in the space in the box C surroundiiigthe piston, when the upper portion of the box is attached inplace,andthe tube D screwed into thesame, so as to properly tighten thepacking.

The well-tubing is now attached to the tube D as the pump is loweredinto the well. After it has reached the bottom the suckerrods areconnected in the usual manner, when thc pump is ready for operation.

W hen the packing becomes loose it is readily tightcned by unscrewiugthe coupling at the base ot' the standard and giving the well-tnbe aturn around,

which causes the lower end of D to act as a follower, pressing againstthe packing.

By employing what is termed a union joint with the well-tube at thetopof the well, the adjustment of the packing can he effected by partiallyunscrewing the couplingwithout disconnecting any of the parts orstopping the working of' the pump.

The combination of a hollow elongated valve-piston,

F, and stl1ngbox AC with a pump-barrel A, andl tubing of an oil-well,substantially as hereinbefore set forth.

' H, CAMP.

Witnesses:

EDWARD WILHELM, J No. J. BoNNEn.

